When should I plant Cải xoăn in Zone 4b?

Start Cải xoăn seeds indoors around 20 Th3. Transplant outdoors after 3 Th4. Expect first harvest around 18 Th5.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is 1 Th5. The first fall frost averages 5 Th10, giving a 157-day growing season.

Can I grow Cải xoăn in Zone 4b?

Yes. Cải xoăn needs 60 days to harvest. Zone 4b has a 157-day growing season, which is sufficient.

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🥬 Growing Cải xoăn in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Cải xoăn in this zone. Sương giá cuối: 1 Th5. Sương giá đầu: 5 Th10.

Planting Calendar

Indoor

Outdoor

Harvest

20 Th35 Th10

Season: 1 Th5 – 5 Th10 (157 ngày)

Vùng4b

Sương giá cuối1 Th5

Sương giá đầu5 Th10

Mùa vụ157 ngày

Thu hoạch60 ngày

Ánh sángNắng một phần

When to Plant Cải xoăn in Zone 4b

Start Seeds Indoors: 20 Th3

Start Cải xoăn seeds indoors around 20 Th3 (6 tuần trước sương giá cuối). Optimal germination temperature: 65F. Germinates in 5-10 days.

Transplant Outdoors: 3 Th4

Transplant Cải xoăn seedlings outdoors after 3 Th4. Wait until soil temperature reaches 40F. Space plants at 1/m² (30cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 18 Th5

First harvest approximately 18 Th5 (~45 ngày from transplant). Continue harvesting until first frost (5 Th10). Cải xoăn can overwinter in mild climates for continued harvest.

Fall Planting: 10 Th8

For a fall harvest, plant Cải xoăn around 10 Th8 (8 weeks before first frost).

Cây trồng đồng hành

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❌ Dâu tây

Cải xoăn in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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